.floating-icons {
    position: fixed;
    top: 30%; /* 距离顶部的位置 */
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}
.icon-item  a{

}
.icon-item {
    width: 80px;
      height: 80px;
      border: none;
      background: #fff;
      border-radius: 14px;
      box-shadow: 0 2px 4px #e0e6ed;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s;
      cursor: pointer;
      padding: 0;
}

.icon-item img {
    width: 60px;
    height: 60px;
}

.icon-item img.default {
    opacity: 1;
}

.icon-item img.hover {
    opacity: 0;
    position: absolute;
    top: 10;
    left: 10;
}

.icon-item:hover img.default {
    opacity: 0;
}

.icon-item:hover img.hover {
    opacity: 1;
}

/* 鼠标悬停时的样式 */
.icon-item:hover,
.icon-item:hover {
 background: linear-gradient(180deg,#4283D3 10%, rgba(67,132,213,0.5443) 59%, rgba(104,169,225,0) 100%);
 box-shadow: 0 4px 12px rgba(53,120,234,0.12);
}
.icon-item:hover a{

}
.icon-item:hover img,
.icon-item:hover img{
    filter: brightness(10); /* 强化白色icon，也可直接用白色icon图 */

}



.tooltip {
    position: absolute;
    left: -130px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    color: #333;
    padding: 8px 12px;
    border-radius: 6px;
    white-space: nowrap;
    font-size: 14px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 9999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 6px 0 6px 6px;
    border-style: solid;
    border-color: transparent transparent transparent #fff;
}

.icon-item {
    position: relative;
}
.icon-item:hover .tooltip {
    opacity: 1;
}